5,463 research outputs found

    Triple and quartic interactions of Higgs bosons in the two-Higgs-doublet model with CP violation

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    We consider the two-Higgs-doublet model with explicit CP-violation, where the effective Higgs potential is not CP-invariant at the tree-level. Three neutral Higgs bosons of the model are the mixtures of CP-even and CP-odd bosons which exist in the CP-conserving limit of the theory. The mass spectrum and tree-level couplings of the neutral Higgs bosons to gauge bosons and fermions are significantly dependent on the parameters of the Higgs boson mixing matrix. We calculate the Higgs-gauge boson, Higgs-fermion, triple and quartic Higgs self-interactions in the MSSM with explicit CP-violation in the Higgs sector and CP-violating Yukawa interactions of the third generation scalar quarks. In some regions of the MSSM parameter space substantial changes of the self-interaction vertices take place, leading to significant suppression or enhancement of the multiple Higgs boson production cross sections.Comment: 29 pages, 4 figures. Minor changes in section 3, misprints in (47) corrected. Version accepted by EPJ

    The entropy of the square-well fluid. II. The mean spherical approximation

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    The semi-analytical expression of the entropy is obtained for the square-well fluid within the mean spherical approximation. © 2013 Vladimir Filippov et al

    A simple way for obtaining the expression for the entropy of fluid. I. The general consideration

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    The more simple technique is used to obtain the analytical expression of the entropy for the hard-core fluid in a general case. © 2013 Anatoliy Yuryev et al
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